dunnigan



(No Model.)

J'. E. DUNNIGAN.

GREASE 0UP.

No. 860,379. Patented Mar. 29, 1887.

Wad/kw. 7 a.

UNITED STATES PATENT OFFICE.

JOHN E. DUNNIGAN, OF OLEVELAND, OHIO, ASSIGNOR TO CATHARINE DUNNIGAN, OF SAME PLACE.

GREASE-CUP.

SPECIFICATION forming part of Letters Patent No. 350,379, dated March 29, 1887.

Application filed October 16, 1886. Serial No. 216,453. (No model.)

To all whom it may concern:

Be it known that 1, JOHN E. DUNNIGAN, of Cleveland, in the county of Guyahoga and State of Ohio, have invented certain new and useful Improvements in Grease-Cups, of which the following is a specification.

My invention relates to grease-cups for lubricating purposes; anditconsists in the peculiar construction and combination of the several parts, as hereinafter fully described, and pointed out in the claims.

In the accompanying drawings, Figure l is a side elevation of my new cup. Fig. 2 is a vertical section of the same. Figs. 3, 4, 5, 6, 7, 8, 9, and 10 are detached views of the several parts comprising my cup.

A is the base of my cup,provided with a hollow screw-threaded neck, a, by which the cup may be secured to the portion of machinery designed to be lubricated.

B is the body or sides of the cup, having its ends screw-threaded, and is fixed in a flange of the base A.

C is a crown-shaped cap or cover screwed onto the top of said body, and has a central opening, 0.

D is a cup shaped plunger playing within the body of the cup, and is provided with a screw-threaded spindle, E, which plays through the opening 0 in the cover 0 vertically, but does not turn therein, the spindle having grooves c e in its sides, in which feathers c in the cover fit, to prevent the said spindle from turning.

F is a screwthreaded thumb-nut playing on the said spindle E, and is provided with a spring'latch consisting of ashouldered pin, G, having a thumb-piece, g, for withdrawing it by. The said pin is forced inward by a spiral spring, i, the purpose of which will be hereinafter shown.

H is a convolute spring bearing upon the plunger D and against the under side of the cover 0, and surrounds the spindle E. In the base A is provided a perforated crown-cover, I, over the discharge-opening in the neck a.

J is a regulating and cut-oft gate, consisting of a partly screw-threaded spindle placed in a transverse bore in the base A, having a hole in line with the bore in the neck a, or having its side or sides cut away in lieu of the hole.

pin, K, having a head, 7r, having an arm, 7;, provided with a pin, 00, arranged to be inserted in one of the holes y in the side of the base A. Surrounding the pin K is a spring, 8, bearing WVilhin the spindle J is placed a squareheaded against the head of the pin, and a shoulder its operation is as follows: The oup,being filled with grease, occupies the free and unobstructed space between the plunger and the base. The

cupshaped plunger has this advantage: the

grease is forced toward the center and there is no liability to grease getting behind the plunger; and the advantage of the perforated cover to the discharge-opening is that there is no liability of the discharge-opening becoming stopped up or clogged with any extraneous matter that may be in the grease, for although some of the perforations may become clogged there will always be a sufficient number of them open to insure the feed. The purpose of the thumb-nut F is for withdrawing the plunger when the cup has become exhausted and'requires refilling. This is done by turn ing the nut,which bears against the cover, and drawing the spindle outward, compressing the spring. Then the cover may be unscrewed, leaving the whole body ofthe cup open. Then, when the cup is filled, the cover is again screwed on, the plunger now bearing upon the grease. The nut may be run up to the top end of the spindle, which will remain extended. There being a hole made in the side and near the end of the spindle, the latch-pin in said nut will catch therein. The purpose of this latching of the nut is to secure it and prevent its being run down on the spindle byjarring or otherwise, and thereby become a stop to the inward progress of the plunger, and so stop the feeding of the cup. The object of latch mechanism in the regulating-gate in the discharge-opening is also to prevent the gate be ing moved by jarring.

By these improvements iny cup is adapted for locomotives, loose pulleys, or other places of like disturbing nature with perfect safety.

Having described my invention, I claim as follows:

1. In a force-feed oil-cup, the combination, with a cup having a discharge-openingin its bottom, of a cup -shaped plunger having a screw-threaded and grooved spindle playing through the cover of the cup, a spring bearing on said plunger, and a nut playing on said spindle above the cover and provided with a latch mechanism, constructed and operating substantially in the manner and for the purpose specified.

2. In a force-feed oil-cup, the combination, with a cup having a discharge-opening in its bottom covered with a perforated crownshaped strainer, of a cup shaped plunger having ascrew-threaded and grooved spindle playing through the cover of the cup, a spring bearing on said plunger, and a nut playing on said spindle above the cover and provided with a latch mechanism, constructed and 0p I crating substantially in the manner and for the purpose specified.

3. In a force-feed oil-cup, the combination, with a cup having a discharge-opening in its bottom, of a gate for regulating the discharge, consisting of a screw-threaded pin, J, placed in a connterbore in the base of the cup and communicating with the said discharge-open- 1 JOHN E. DUNNIGAN.

XVitnesses:

GEO. W. TIBBITTs, E. \V. LAIRD. 

